Zn2GeO4 nanowires synthesized by dual laser-hydrothermal method for deep-ultraviolet photodetectors

Abstract Ternary Oxide Nanocrystals (TONs) and its ultraviolet detection capability have achieved widespread attention in recent years due to its wide commercial and military applications. However, how to make stable and environmentally-friendly TONs have always bothered us. In this paper, we introduced an advanced dual parallel 1064 nm laser ablation in liquid (LAL) plus hydrothermal process method to synthesize Zn2GeO4 nanowires. In addition, we innovatively added H2O2 during LAL process. The results prove that the samples synthesized in water with H2O2 not only have a longer size, but also perform better in subsequent deep-ultraviolet (DUV) photoelectric tests. DUV detectors based on Zn2GeO4 nanowires exhibited excellent photoconductive performance in terms of high current switching ratio, excellent stability and reproducibility, and fast response and recovery time due to this universal and green synthesis method. This also provides a new idea and application method for the synthesis of TONs.